supraventricular tachycardia (redirected from Tachycardia, supraventricular)

tachycardia /tachy·car·dia/ (-kahr´de-ah) abnormally rapid heart rate.tachycar´diac

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atrial tachycardia  a rapid cardiac rate, usually 160–190 per minute, originating from an atrial locus.

atrioventricular (AV) junctional tachycardia , atrioventricular (AV) nodal tachycardia junctional t.

atrioventricular nodal reentrant tachycardia  that resulting from reentry in or around the atrioventricular node; it may be antidromic, in which conduction is anterograde over the accessory pathway and retrograde over the normal conduction pathway or orthodromic, in which conduction is anterograde over the normal conduction pathway and retrograde over the accessory pathway.

atrioventricular reciprocating tachycardia  (AVRT) a reentrant tachycardia in which the reentrant circuit contains both the normal conduction pathway and an accessory pathway as integral parts.

chaotic atrial tachycardia  that characterized by atrial rates of 100 to 130 beats per minute, markedly variable P wave morphology, and irregular P–P intervals, often leading to atrial fibrillation.

circus movement tachycardia  reentrant t.

ectopic tachycardia  rapid heart action in response to impulses arising outside the sinoatrial node.

junctional tachycardia  that arising in response to impulses originating in the atrioventricular junction, i.e., in the atrioventricular node, with a heart rate greater than 75 beats per minute.

multifocal atrial tachycardia  (MAT) chaotic atrial t.

nonparoxysmal junctional tachycardia  a junctional tachycardia of slow onset, with a heart rate of 70 to 130 beats per minute; due to enhanced automaticity of the atrioventricular junctional tissue, often secondary to disease or trauma.

paroxysmal tachycardia  rapid heart action that starts and stops abruptly.

paroxysmal supraventricular tachycardia  (PSVT) supraventricular tachycardia occurring in attacks of rapid onset and cessation, usually due to a reentrant circuit.

reciprocating tachycardia  a tachycardia due to a reentrant mechanism and characterized by a reciprocating rhythm.

reentrant tachycardia  any tachycardia characterized by a reentrant circuit.

sinus tachycardia  (ST) tachycardia originating in the sinus node; normal during exercise or anxiety but also associated with shock, hypotension, hypoxia, congestive heart failure, fever, and various high output states.

supraventricular tachycardia  (SVT) any regular tachycardia in which the point of stimulation is above the bundle branches; it may also include those arising from large reentrant circuits that encompass both atrial and ventricular sites.

ventricular tachycardia  an abnormally rapid ventricular rhythm with aberrant ventricular excitation, usually above 150 beats per minute, generated within the ventricle, and most often associated with atrioventricular dissociation.

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supraventricular tachycardia

n. Abbr. SVT

A tachycardia that originates above the ventricles of the heart, as in the atria or the atrioventricular node.

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Supraventricular tachycardia

A fast heart beat that originates above the ventricles.

Mentioned in: Electrophysiology Study of the Heart

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supraventricular tachycardia (SVT)

[-ventrik′yələr]

Etymology: L, supra + ventriculus, little belly

any cardiac rhythm with a rate exceeding 100 beats/min that originates above the branching part of the atrioventricular (AV) bundle, that is, in the sinus node, atria, or AV junction.

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tachycardia

abnormally rapid heart rate.

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atrial tachycardia

rapid contraction of the atrium arising from an ectopic focus in the atrium. The heart rate remains normal.

ectopic tachycardia

rapid heart action in response to impulses arising outside the sinoatrial node.

idioventricular tachycardia

one occurring as a compensation for a sinus bradycardia and A-V block.

junctional tachycardia

that arising in response to impulses originating in the atrioventricular junction, i.e. the atrioventricular node.

orthostatic tachycardia

disproportionate rapidity of the heart rate on arising from a recumbent to a standing position.

paroxysmal tachycardia

episodes of an abrupt and marked increase in heart rate in a resting patient, with an equally sudden return to normal.

sinus tachycardia, simple tachycardia

an increase in heart rate from heightened activity of the sinoatrial node, such as occurs with excitement or pain.

Sinus tachycardia in a dog.By permission from Ettinger SJ, Feldman E, Textbook of Veterinary Internal Medicine, Saunders, 2004

supraventricular tachycardia

a combination of junctional tachycardia and atrial tachycardia.

ventricular tachycardia

see ventricular tachycardia.

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supraventricular tachycardia

Paroxysmal atrial tachycardia Cardiology An arrhythmia initiated by a premature atrial beat in the AV node, SA node, or bundle to the point of bifurcation; once the ventricle contracts, an echo atrial beat is stimulated via a retrograde tract, resulting in a reverberating re-entry phenomenon, resulting in an atrial rate of 180-300 beats/min Management Simple vagal stimulation–eg, carotid sinus massage, ice bag, breath-holding; if intense, cardioversion or digoxin therapy

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Patient discussion about Tachycardia, supraventricular.

Q. SVT and AF, Hearts that go fast to slow or any others probs with the beats of any kind and Ablation of hearts I have had Ablation done once and I am still having passing out spells and still on 50mg toprol 2 times a day till two days ago, now I am on 150 to 200 aday again. Its not the first time I have had to up meds. I had ablation down 4/22/05. I can breath better now but but it didnt take it away as you can tell. Now Dr Leonardie would like to do it again . This is the big ????! Will it or can it work 100% this time, or will it hit and miss some again???? MTT

A. Well I can understand the frustration of having to go through this procedure yet another time. There are no guarantees in medicine. You should follow your doctor's advice, as another proceudre might be more helpful than the last one. However you should keep in mind that nothing is for sure.